Jack's hat collection
Jack's hat collection contains striped hats and spotted hats. The ratio of spotted hats to the total number of hats is 2:7.
A) Jack picks a hat to wear at random. What is the probability it will be a str hat?
B) What is the ratio of spotted hats to striped hats?
C) Jack throws away 5 spotted hats. The ratio of spotted to striped hats is now 1:2. How many spotted hats does Jack have?